Apparatus for making pinions



(No Model.)

A. o. DALZELLX Z? QC M Patented Oct. 27 1885.

APPARATUS. FOR MAKING PINIONS.

I Wit-155555 I atar N. PETERS. mmmm wan-mm n. c.

UNITED STATES PAT NT OFFIC ALLAN O. DALZELL, OF NEWPORT, KENTUCKY.

APPARATUS FOR MAKING PINIONS.

SPECIPICATION forming part of Letters Patent No. 329,286, dated October 27, 1885.

Application filed April 27, 1885.

2'0 aZZ whom, it may concern.-

Be it known that I, ALLAN O. DALZELL, of the city of Newport, county of Campbell, and State of Kentucky, have invented certain new and useful Improvements in Apparatus for Making Pinions, of which the following is a specification.

This invention relates to the manufacture of pinions from metallic blanks, the object of the invention being, primarily, to upseta solid metallic blank to form a pinion and staff integral with one another, and form such pinion complete in one operation and without waste of material.

In the manufacture of small pinions for watches, 850., as heretofore practiced, much difficulty has been experienced in securing a uniform pitch and size of teeth, so that the pinions would properly mesh with one another, and much waste of material and time was consequent to the method of forming the said pinion and staff, the pinions being formed from what is known as "pinion-wire, a continuous wire drawn to the desired diameter of the pinion, with teeth or ribs formed upon its periphery for the entire length, the wire being usually drawn in lengths oftwenty-four inches. In forming the pinion and staff from pinionwire the wire was first cut into the desired lengths toform pinions, and such short pieces were subsequently turned off at either end to the diameter desired for the staff, a portion of the wire being left to form the pinion proper, thus requiring three operations to form the pinion.viz., first, drawing the plain wire to the desired length,with longitudinal ribs thereon; second, cutting the wire so formed into short lengths; and, third, turning the metal of such pieces off at either end to proper di 0 ameters to form the staff. In forming beveled pinions from pinion-wire the wire must be drawn tapered from end to end, and consequently two pinions cut from the same wire could not be of uniform diameter, and therefore it was difficult to select pinions which would mesh properly.

By my improved method of forming pinions I not only obviate waste of material, but form pinions of exact, practically, proportions,

and in less time than by the old method, con- Serial No. 163,620. (No model.)

sequently cheapening the cost of manufacture and increasing the utility of the pinions, as will be hereinafterrnore clearly pointed out.

My invention consists in certain apparatus to form pinions from metallic blanks, substantially as hereinafter described.

Figure 1 represents in side elevation, partially in longitudinal section, a set of dies for forming watch or other pinions from solid me .upperdie; Fig. 5, a plan and side elevation of a metallic' blank from which the pinion is formed; Figs. 6 and 7, a side and plan view, respectively, of one form of bevel-pinion formed from a metallic blank, and Fig. 8 a side view of another form of beveled pinion.

This invention is virtually a continuation or modification of the invention described in an application forimprov'ementsiu the method of and apparatus for making watch-crown cores, filed by me in the United States Patent Office April, 1885, to which reference may be had, the general construction of the apparatus therein described being maintained in this invention, with the exception that the matrix of the upper and lower dies are different, as will be described. The dies and auxiliaries for forming a pinion from a solid metallic blank are used with a double-acting press of any ordinary or improved pattern. The dies consist of the upper die or half, A, and the lower die or half, B. The upper die, A, works in and is guided in its movement by a collar, 13, the said die and its collar being connected to the die holders or plungers of the press in the usual manner. The upper die, A, is provided with a matrix, (4, opening into it at its lower end, said matrix being of a shape to correspond to the upper part of the staff of a pinion to be formed, it being herein shown as round at its lower end and square at'its upper end. This matrix may, however, be of different shapes to form staffs of different styles. All the dies will be r00 constructed of hardened or chilled steel, as is customary with dies having to sustain any considerable pressure. The lower die, B, is

seated in a steel die-box, D, and is provided By reference to the drawlngs it will be noticed that the central opening, b, extends from the matrix I) entirely through the dieB, a solid-steel base-piece, G, seated in the diebox D, and extending into the die B, termihating the opening I), and determining the length of staff to be formed therein. This base-piece 0 might be done away with, if desired. A projection on the die-box D might be provided to serve the same purpose. The object of extending the opening 12 entirely through the die B, which die is removable from its die-box, is to provide a means of access thereto to drive the pinionout of the die should it in any manner become wedged or fastened therein. The lower die, B, is provided with-an annulus or downwardly-projecting flange which has its bearingsin an annular groove formed in. the face of the diebox 1). The upper face of, the lower die is stepped or rabbeted, as shown at d d, to form guiding-facesfor the collar B and the upper die, A; The bearings thus afforded by the sides of the rabbets d d not only align the collar B with relation to the lower die, but insure accuracy of movement of the upper die, A, when operating upon a blank. With the aid of such guides-viz., rabbets d d-the upper die, A, is bound to maintain the same relation with the lower die, B, when upsetting a blank to form a pinion, thereby obviating the possibility'of misshaping a blank by vstriking it out of line.

suitable material-such as softened orannealed steel-is placed vertically in the central openresponds in diameter 0 the diameter of the blank and supports the same in vertical position. The upper die, A, and-sleeve or collar B are thenall wed to descend, the collar contacting with the lower diebefore the upper die strikes the metallic-blank, the collar entering the rabbeted portion d of the lower die, which holds said die from lateral movement, after which the die A strikes the upper end of the blank,'upsetting the same into the pin- 7 ion-shaped matrix of the lower die, and filling the staif-forming openings in the upper and lower dies, thus forming the blank tothe shape of the upper and lower matrix of the dies and shaping the pinion.-

Instead of beveling the matrix of the lower ing, b, of the lower die B,which openingcordie, as shown in the drawings, its inner face might bestraight to form straight pinions.

The staffiforming openings may be of vari l ous configuration for various styles of staffs. Inasmuch as the method of making pinions herein described may constitute a patentable invention, I would reserve the right to make such method the subject'mattcr of a'separate application.

I claim- 1. In an apparatus for forming solid metallic blanks, alo'wer die having a pinion-shaped matrix, andaifiipper ie-having a staif-forming matrix to'prcss the metal blank and upset the same to form a pinion, substantially as described.

2. The combination, in an apparatus for making pinions from solid metallic blanks, of the die A, having an elongated staff-forming matrix, a, and the die B, having the pinionshaped matrix I), and staff-forming central opening, b. constructed and operating sub stantially as described.

In witness whereof I have hereunto set my hand and seal,at Newport, Kentucky, this 22d day of April, A. D. 1885.

ALLAN C. DALZELL, [L. s.]

In presence of- EDWARD BEESCH, Josnrn BEcKER, Jr.

pinions from 

